1 /*
2  * Copyright (C) 2019 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #ifndef _UI_INPUTREADER_SINGLE_TOUCH_MOTION_ACCUMULATOR_H
18 #define _UI_INPUTREADER_SINGLE_TOUCH_MOTION_ACCUMULATOR_H
19 
20 #include <stdint.h>
21 
22 namespace android {
23 
24 class InputDevice;
25 struct RawEvent;
26 
27 /* Keeps track of the state of single-touch protocol. */
28 class SingleTouchMotionAccumulator {
29 public:
30     SingleTouchMotionAccumulator();
31 
32     void process(const RawEvent* rawEvent);
33     void reset(InputDevice* device);
34 
getAbsoluteX()35     inline int32_t getAbsoluteX() const { return mAbsX; }
getAbsoluteY()36     inline int32_t getAbsoluteY() const { return mAbsY; }
getAbsolutePressure()37     inline int32_t getAbsolutePressure() const { return mAbsPressure; }
getAbsoluteToolWidth()38     inline int32_t getAbsoluteToolWidth() const { return mAbsToolWidth; }
getAbsoluteDistance()39     inline int32_t getAbsoluteDistance() const { return mAbsDistance; }
getAbsoluteTiltX()40     inline int32_t getAbsoluteTiltX() const { return mAbsTiltX; }
getAbsoluteTiltY()41     inline int32_t getAbsoluteTiltY() const { return mAbsTiltY; }
42 
43 private:
44     int32_t mAbsX;
45     int32_t mAbsY;
46     int32_t mAbsPressure;
47     int32_t mAbsToolWidth;
48     int32_t mAbsDistance;
49     int32_t mAbsTiltX;
50     int32_t mAbsTiltY;
51 
52     void clearAbsoluteAxes();
53 };
54 
55 } // namespace android
56 
57 #endif // _UI_INPUTREADER_SINGLE_TOUCH_MOTION_ACCUMULATOR_H